// 云函数入口文件
const cloud = require('wx-server-sdk')
const db = cloud.database();
const _ = db.command
cloud.init({
  env: cloud.DYNAMIC_CURRENT_ENV
}) // 使用当前云环境

// 云函数入口函数
exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()
  console.log(wxContext.OPENID);
  try {
    return await db.collection('readHistory').where({
      _openid: wxContext.OPENID
    }).remove()
  } catch (e) {
    console.error(e)
  }
  return {
    event,
    openid: wxContext.OPENID,
    appid: wxContext.APPID,
    unionid: wxContext.UNIONID,
  }
}